	b	start
	b	.
	b	.
	b	.
	b	.
	b	.
	b	UCOS_IRQHandler
	b	.
start:
	mov	sp, #0xd800	@ sp_svc
	cps	#18		@ irq
	mov	sp, #0xe000	@ sp_irq
	cps	#19		@ svc
	b	main
